Retort discharge cooling system



Feb. 16,1932. J, BECKER 1,845,221

RETORT DISCHARGE COOLING SYSTEM Filed April 23, 1925 2 Sheets-Shet 1 l I I 1 Illlllll llllllll llllll l' :INVEN: 0R.

A TTORNEYS.

BYM W 7 Feb. 16, 1932. J: BECKER 1,845,221

RETORT DISCHARGE COOLING SYSTEM Filed April 23, 1925 2 Sheets-Sheet 2 A TTORNEYS.

UNITED STATES PATENT, OFFICE JOSEP H BECKER, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO rm: KOPPERS M- PANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA BETORT DISCHARGE COOLINGISYSTEM Application filed April 2a, 1925. Serial No. 25,203.

This invention relates broadly to improvements in the art of cooling heated sub- .stances, and in its more specific aspects to means and methods for utilizing the still 5 waste liquor of by-product coking plants-for the quenching of the coke produced therein.

As an illustrative example my invention is shown herein as applied to continuous vertlf cal' coking retorts, such, for instance as disclosed. in the application of Van Ac eren Serial No. 684,342, filed January 4, 1924, and Serial no. 1,718, filed January 12, 1925, both assigned to the same assignee' as the instant 1 case. The invention is here shown in special co-operative relationship to the quenching system designed to prevent the soaking of the coke disclosed in m ap lication No. 9,509, filed February 16, 1925. t is .obvious, however, that the present inve tion is not limited to use in such system, butis of general utility in association with other quenching systems or other heat transfer systems. I

Inasmuch as no advantageous use is ordinarily found for still waste liquor and stringent regulations usually prohibit it from being turned intodrainage systems because of the harmful character of its constituents, its disposal heretofore has often presented a serious problem.

In one of its aspects my invention. contemplates the disposal of still waste liquor in conforinity with existing regulations in a highly efiicient and economical manner. As applied to the quenching of coke in continuous verti- -cal retorts, or the like, thestill waste liquor is introduced into the coke magazine to cool the hot coke therein, the steamand other vapors formed being vented from the coke magazine into the atmosphere while simultaneously the desired amount of the steam generated may be utilized for water gasproduction by allowing it to pass into the retort's; The water gasthus produced may be employed to effeet the ,dilution of the richer gases of distillation to any degree that, may be desired. The remainder of the still waste liquor may appear asmOisture in the coke or may be separated therefrom in the manner disclosed in myformer application No. 9,509, supra, and returned to the liquid supply line.

My invention further contemplates 1 a quenching system of the closed cycle type in which the liquid remaining as such after the quenching operation is separated from he coke and returned through the system to again effect a quenching action there being added from the main source of supply, as

needed, the amount of liquid necessary to makeup for the losses.

' In order to prevent the bleeding of the gas A .with the vapors escaping through the vent suitable governors, known to the art, may be provided actuated by the pressure in the vertical-retort in a manner to prevent the escape of the gas with the vented vapors.

In addition to the advantages of my system hereinabove enumerated various other advantages inherently resulting from my construction will be apparent on consideration of the detailed disclosure.

My invention further consists in such other new and useful improvements and has for further objects such other operative -ad-. vantages or results as may be found to obtain in the methods and processes hereinafter described or claimed. a

In the accompanying drawings, forming a part of this specification, and showing for purposes of exemplification, a preferred form and manner in which the invention may be embodied and practiced, but without limiting the claimed invention to such illustrative instance or instances Figure 1 is a vertical section cross-wise of the battery showing a vertical retort with my improvements applied thereto, and

Fig. 2-is a diagrammatic view of my system showing portions of the retortsand the coke quenching and discharging devices in section.

The same characters of reference designate the same parts in each of the several figures.

In the illustrated embodiment of my invention there is shown a vertical retort A comprising regenerators B and coking chambers C. I

At the bottom of the retorts are provided coke extractor magazines 1 of the character disclosed in my hereinbefore mentioned apwith coke extractor rolls 5 and liquid seal outlet valves 7, said magazines being provided with liquid deflector plates 13 for separating the surplus liquid after quenching from the quenched coke and directing it to said liquid seal valves to maintain the level in the same as more fully set forth in said application. j

Still waste liquor or other cooling medium is led through the supply line 30 to a drain tank 31, from whence it is raised by pump 32 through the line piping 33 to the storage tank 34 from which it descends by gravity through the feed pipe 35 to the quenching inlets 12 adj acent the coke extractor rolls 5. As set forth at length in my prior application No. 9,509, supra, a portion of the quenching liqnor is converted into steam, a regulated portion of which is caused to ascend through the hot fuel in the retorts where it is converted into water gas sufficient in quantity to dilute the gases of distillation to the desired degree. The surplus cooling liquid not converted into steam or vapor is separated from the coke by the liquid deflector plates 13 by which it is led to the liquid seal valves while the surplus steam and other vapors generated are caused to pass out through the vents 20 from which they are led, preferably through a common pipe line 36, to a regulator 37 which by way of illustration is shown as of the adjustable float pressure typehavin an inverted cup-shaped member 38 overt e vapor inlet and adjustable to varying depths below the liquid seal in said regulator to determine the venting pressure. The regulator is provided with a. vent 39for venting the surplus ployinga single regulator for the retorts each the vent 39 to the atmosphere.

may be provided with separate re lator and vent of the character indicated, ut inasmuch as ordinarily substantially the same conditions obtain in each retort duplication of regulators is unnecessary and adds to the complexity and cost of the installation.

- In order to prevent bleeding of the gas with the surplus steam and undesirable vapors vented through the vent pipe 39 to the atmosphere the venting pressure is adjusted by means of the venting regulator 38 relative to the pressure in the vertical retorts to cause the portion of the steam requisite to produce the desired quantity of water gas to ascend into the retorts while causing the remainder of the steam and other vapors to pass through The surplus liquid overflowing the liquid seal valves 7 is led through the overflow pipes 42 back to the drain tank 31 where its losses are made up from the originalsource the pump 32 to repeat the quenching operatlon, the complete operation being of a cyclic character.

Clean-out pipes 21 may be provided for the water seal valves? as fully set forth in my application No. 9,509, supra.

The invention .as hereinbefore set forth,

or exemplified may be variously practiced or embodied 'within the scope of the claims hereinafter made.

I claim: 0 1. In aby-product coking plant comprislng a contlnuous vertical retort, provided at 1 its lower end with a coke discharge device -so as to flow into the same, means adapted to vent a portion of vapor, generated by the quenching operation, from the discharge device and allow another portion of the vapor to ascend through said retort; and means for conveying liquid from said separating,

means to the drain tank; substantially as specified.

2. In a by-product coking plant comprising a continuous vertical retort, provided at its lower end with a coke discharge device therefor, in combination: means for conveyin r a quenching liquid to a point within said discharge device, means adapted to vent a portion of va or, generated by the quenchin operation, from the dischargedevice and a1 ow another portion of the vapor to ascend through said retort; and means for conveying liquid from said discharge device to the first above-mentioned means; substantially as specified.

3. In a by-product coking plant comprising a continuous vertical retort, provided at its lower end with a coke discharge device therefor, separating means in said discharge device for separating spent quenching liquid from quenched coke, in combination: means for conveying a quenching liquid to a point within said discharge device above said separating means so as to flow into the same, said discharge device being provided with means for venting steam and undesirable vapors generated therein by the quenching operation; and means for conveying liquid from said separating means to the second above-mentioned means; substantially as specified. O

4'. In a by-product coking plant, in combination: a vertical coking oven; means for conveying a quenching liquid to a point therein below the top thereof; said oven being provided with means for venting vapor "generated by the quenching operation; and

means for conveying quenching liquid from said coke oven to the first-above-mentioned means; substantially as specified.

5. In a by-product coking plant comprising a continuous vertical coking retort adapted to continuously discharge finished coke at its lower end and provided with a coke extractor magazine in open communication with its lower end, said magazine being adapted to support a coking mass in said retort and to extract and accumulate for periodic discharge from the retort finished quenched coke from a mass thereof in said retort, separating means in said magazine for separating spent quenching liquid from quenching coke in said magazine,'the combination of means for feeding quenching liquid into said magazine above said separating means so as to flow into the same, means for conveying spent liquid from said separating means to Without said magazine, a gas-ofltake for said retort communicating with the same at the upper part thereof, and venting means communicating with said magazine and adapted to vent vapor from said magazine to theair without passing through said retort.

6. In a by-product coking plant comprising a continuous vertical coking retort adapted to continuously discharge finished coke at its lower end and provided with a magazine in open communication with its lower end a coke extractor in said magazine adapted to support a coking mass in said retort and to extract for periodic discharge from the retort finished quenched cokefrom a mass thereof in said retort and accumulate said quenched coke in said magazine, the combination of means for feeding quenching liquid into said magazine, means for conveying spent liquid from said magazine to outside of the same, a gas-ofi'take for said retort communicating with the same at the upper part thereof, and venting means communicating with said-magazine and adapted to Vent vapor from said magazine to outside the same without passing through said retort. In testimony whereof I have hereunto set my hand. a JOSEPH BECKER. 

